--  @testpoint:opengauss关键字reassign(非保留)，作为函数名

--关键字不带引号-成功
drop function if exists reassign;
create function reassign(i integer)
returns integer
as $$
begin
    return i+1;
end;
$$ language plpgsql;
/
drop function reassign;
--关键字带双引号-成功
drop function if exists "reassign";
create function "reassign"(i integer)
returns integer
as $$
begin
    return i+1;
end;
$$ language plpgsql;
/
drop function "reassign";
--关键字带单引号-合理报错
drop function if exists 'reassign';
create function 'reassign'(i integer)
returns integer
as $$
begin
    return i+1;
end;
$$ language plpgsql;
/
--关键字带反引号-合理报错
drop function if exists `reassign`;
create function `reassign`(i integer)
returns integer
as $$
begin
    return i+1;
end;
$$ language plpgsql;
/